This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

SN7404: Radiation-hardened /space qualified components vs components with space heritage

Part Number: SN7404


Often you will find the same component in both categories, but what about “normal” components with space heritage?

I am thinking about plastic packages with more than one BJT transistor (for instance opams and logic gates)

Bipolar transistors are known to be more robust than MOFETs when it comes to radiation, so I would assume that for instance the 7404 inverter has been previously used on missions.

How would you proceed to find components with space heritage?

And what is the difference between a radiation-hardened version of a component and its normal counterpart?

(This questions is regarding use in environments with moderate radiation)




  • Officially, there is no such thing as "space heritage", and radiation tolerance for commercial devices is not guaranteed and might change with any design change. I doubt that TI has any such information, and even if it existed, it would not be published.

    If you want to use a commercial device in a radiation environment, you have to find out its tolerance yourself by doing your own tests.

    Also see Radiation Hardened vs Radiation Tolerant.